High-resolution density profiles of two firn cores from Union Glacier, Ellsworth Mountains, West Antarctica

doi:doi:10.1594/PANGAEA.963192

High-resolution density profiles of two firn cores from Union Glacier, Ellsworth Mountains, West Antarctica

Firn cores BAL-1 and PASO-1 were both retrieved in November 2015 from the Union Glacier region, located in the Ellsworth Mountains at the northern edge of the West Antarctic Ice Sheet. BAL-1 was drilled in a U-shaped glacial valley (Balish Glacier) at an altitude of approximately 1520 m above sea level (a.s.l.) to a depth of 17.28 m. PASO-1 was drilled on a plateau west of the Gifford Peaks at an altitude of about 1920 m a.s.l. to a depth of 15.04 m. Both firn cores were obtained using a portable solar-powered and electrically operated ice-core drill (Backpack Drill; icedrill.ch AG). Density measurements of the two firn cores were performed at the ice-core processing facilities of the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) in Bremerhaven, Germany, in spring and autumn 2016. X-ray microfocus computer tomography (ICE-CT; Freitag et al., 2013, doi:10.3189/2013JoG13J028) was used for the measurements, providing depth-density profiles with a resolution of better than 1 mm. The density data were used to analyse the firn core stratigraphy (e.g., determination of the snow-firn transition depth, identification of wind crusts), to calculate diffusion lengths as well as to derive accumulation rates for the firn-core drill sites.

BibTex:

@dataset{Hoffmann-Abdi_Kirstin_and_Fernandoy_Francisco_and_Meyer_Hanno_and_Thomas_Elizabeth_R_and_Aliaga_Marcelo_and_Tetzner_Dieter_and_Freitag_Johannes_and_Opel_Thomas_and_Arigony-Neto_Jorge_and_Göbel_Christian_Florian_and_Jaña_Ricardo_and_Rodríguez_Oroz_Delia_and_Tuckwell_Rebecca_and_Lynch_Emily_and_McConnell_Joseph_R_and_Schneider_Christoph_2024,
    abstract = {Firn cores BAL-1 and PASO-1 were both retrieved in November 2015 from the Union Glacier region, located in the Ellsworth Mountains at the northern edge of the West Antarctic Ice Sheet. BAL-1 was drilled in a U-shaped glacial valley (Balish Glacier) at an altitude of approximately 1520 m above sea level (a.s.l.) to a depth of 17.28 m. PASO-1 was drilled on a plateau west of the Gifford Peaks at an altitude of about 1920 m a.s.l. to a depth of 15.04 m. Both firn cores were obtained using a portable solar-powered and electrically operated ice-core drill (Backpack Drill; icedrill.ch AG). Density measurements of the two firn cores were performed at the ice-core processing facilities of the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) in Bremerhaven, Germany, in spring and autumn 2016. X-ray microfocus computer tomography (ICE-CT; Freitag et al., 2013, doi:10.3189/2013JoG13J028) was used for the measurements, providing depth-density profiles with a resolution of better than 1 mm. The density data were used to analyse the firn core stratigraphy (e.g., determination of the snow-firn transition depth, identification of wind crusts), to calculate diffusion lengths as well as to derive accumulation rates for the firn-core drill sites.},
    author = {Hoffmann-Abdi, Kirstin and Fernandoy, Francisco and Meyer, Hanno and Thomas, Elizabeth R and Aliaga, Marcelo and Tetzner, Dieter and Freitag, Johannes and Opel, Thomas and Arigony-Neto, Jorge and Göbel, Christian Florian and Jaña, Ricardo and Rodríguez Oroz, Delia and Tuckwell, Rebecca and Lynch, Emily and McConnell, Joseph R and Schneider, Christoph},
    doi = {10.1594/PANGAEA.963192},
    institution = {PANGAEA (Ecology)},
    keyword = {'Antarctica', 'Snowpack', 'West Antarctica', 'density', 'firn core', 'snow density'},
    title = {High-resolution density profiles of two firn cores from Union Glacier, Ellsworth Mountains, West Antarctica},
    url = {https://service.tib.eu/ldmservice/vdataset/png-doi-10-1594-pangaea-963192},
    year = {2024}
}